7000 N Broadway 1-106
Denver, Colorado 80221

Mon - Fri: 7:30AM - 5:00PM

Sat: 8:00AM - 5:00PM

Sun: Closed

95.8% would refer friends and family to us

5 stars Customer since 2016

My service man was on time and professional. I purchased my air conditioner/heating unit from Controlling Systems 7 yea ... Read More

4 stars Customer since 2015

Prompt communication and customer service. Furnace seems great. Installers didn't do a very good job of cleaning up aft ... Read More

5 stars Customer since 2016

Service tech was prompt and courteous and knowledgeable. Very satisfied with service.

4 stars Verified customer

Really happy with the quick response starting with setting up the initial appointment and continuing with arranging the ... Read More

5 stars Customer since 2016

Great company to work with. Professional, on time, don't try to up sell you. I trust them completely.

5 stars Customer since 2015

Bill and the team at Controlling Systems are awesome. We have relied on this firm for over a decade.

5 stars Verified customer

On time. Reasonable price. Worked to find a hot water heater that would fit in a tight space in a 1950 house.

5 stars Customer since 2016

Gus evaluated my system and found an AC solution that I had previously been told was not possible. He was on time, extr ... Read More

5 stars Customer since 2016

Sean was our service representative. Installation was professional. Upon having to readjust he was knowledgeable, cour ... Read More

5 stars Customer since 2015

Controlling Systems has been taking care of our HVAC and plumbing system needs for over 16 years and has consistently pr ... Read More